DEMCO model DS1 spindle is especially designed for DEMCO E-96 2-speed grinders. It is precision-machined by our craftsman to extremely high tolerances to insure quiet operation and long life. We also repair this spindle (specify part S15).

INSTRUCTIONS TO ADJUST COLLET

The collet is what holds the mandrel of the grinding instrument in the spindle. The spacer at the rear of the collet includes a fine adjustment screw. If the collet does not tighten firmly around the mandrel – follow these directions:

With collet in open position only, insert the hex wrench through the collet nose. Turn hex wrench slightly clockwise to make collet tighter – counter clockwise to loosen. Caution: A mandrel must always be in place when closing the collet.